A2HM1CSQ12VDC1.6R

Relay Automotive Overview

The A2HM1CSQ12VDC1.6R is a sealed SPDT automotive relay manufactured by CIT Relay and Switch, designed for high-current switching applications in vehicle electrical systems. It features a 12VDC coil with a rated power of 1.6W and includes an integrated 680-ohm resistor to suppress voltage spikes. The unit utilizes AgSnO2 contact material to ensure reliable performance under heavy loads, supporting a maximum switching current of 50A at 14VDC. Constructed with a metal bracket and shroud, the relay offers quick connect termination options and PCB pin mounting capabilities. Its compact dimensions facilitate installation in space-constrained automotive environments while maintaining QS-9000 and ISO-9002 certified manufacturing standards.

Relay Automotive Feature Summary

• Sealed construction with metal bracket and shroud for environmental protection
• Integrated 680-ohm resistor for coil voltage spike suppression
• Quick connect termination and PCB pin mounting options
• AgSnO2 contact material for durable high-current switching

Relay Automotive Applications

• Automotive lighting circuits
• High-power accessory control systems
• Industrial lamp accessories
• General automotive load switching

Relay Automotive Procurement Notes

Verify that the specific part number matches the required coil voltage and contact arrangement before ordering. Confirm that the integrated resistor specification aligns with the system's transient suppression requirements. Ensure mounting hardware compatibility with the metal bracket design. Check for RoHS compliance status if restricted substances are prohibited in the final assembly. Validate that the 50A current rating exceeds the peak load demands of the intended application circuit.

Relay Automotive Selection Notes

Select this model when a sealed SPDT configuration is required for automotive or industrial environments. The 12VDC coil voltage must match the available control supply. Consider the 50A capacity for heavy loads such as lamps or motors. The inclusion of a built-in resistor simplifies circuit design by eliminating external snubber components. Ensure physical space accommodates the chassis mount dimensions and bracket clearance.

Relay Automotive Part Context

This component belongs to the CIT A2 series of automotive relays, characterized by robust sealing and high current handling. The 'HM' designation typically indicates specific housing or terminal variations within the series. It shares design principles with other CIT automotive relays like the A2S1CSQ12VDC1.6R but differs in specific contact ratings and internal resistor integration. The series is widely used in transportation and stationary equipment requiring reliable electromechanical switching.

Relay Automotive Replacement Considerations

Direct substitutes may include models from the same CIT A2 family with identical coil voltage and contact arrangement. Verify that any replacement maintains the 50A@14VDC rating and sealed construction. Check if the alternative includes a similar resistor or requires external suppression. Ensure mechanical footprint and terminal type compatibility for direct board or harness integration.